|
针对IEC 60335-1的家电类产品来说:
- `! A- q; V+ Z0 h0 z7 Z2 p% YY1或Y2都可以。如果使用则至少需要2个或以上,需要考虑任何一个开路或短路的情况。( @9 h; h* V; z# T) }4 O* ?7 u) d
0 h% @6 \$ f/ N6 T$ P4 {5 B
22.42 Protective impedance shall consist of at least two separate components. If any one
* w* k$ n) K' rof the components is short-circuited or open-circuited, the values specified in 8.1.4 shall not' z8 A Y. P2 c) D3 q
be exceeded.
$ m7 e/ V) x3 Y# ^9 QComponent impedances shall be unlikely to change significantly during the lifetime of the
, `9 x: e6 m7 X/ r* eappliance.
$ P1 ^, @5 o- ?1 r8 H# [ eCompliance is checked by inspection and by measurement and if necessary, for resistors and' f2 i4 I s9 B2 c, W
capacitors by the following tests.# o8 r" M9 M' w$ |7 [
Resistors are checked by the test of 14.1 a) in IEC 60065 and capacitors are checked by the4 q4 \- N6 }8 J6 W% h8 B3 }
tests for class Y capacitors in IEC 60384-14 appropriate to the rated voltage of the appliance. |
|